THE NAUTILUS. 15 



chestnut along the upper middle whorls just below the suture. In 

 most specimens the first three or four whorls are broken off, leaving 

 only about two that show the sharp costulation. 



3. Melania hastula Lea. 



One young specimen, apparently referable to this species. 



4. Neritina zigzag Lam. 



5. Neritina cornea L. 



6. Neritina turrita Chemn. 



All of these have a wide distribution throughout the East Indies. 



7. Melampus fasciatus Desh. 



Color pattern very variable. A variety, "javanica," occurs in 

 Java (Mousson, p. 46). 



8. Pythia striata Reeve. 



This agrees more perfectly with the mainland form than with the 

 Javan P. pyramidata, yet for geographical reasons it may be likely 

 that this is a localized variety of the latter. The two species seem 

 to be very close. 



9. Cassidula mustellina Desh. 



Quoted from the Philippines to Java. 



10. Amphidromus enganoensis Fulton. Ann. and Mag., series 6, Vol. 17, p. 71. 



11. Trochomorpha Hartmani Pfr. 



Originally described from Java. The largest of three specimens 

 collected measures: height 1T5, greater diam. 35, lesser diara. 29 

 mm. 



12. Planispira Aldrichi n. s. PI. 2, figs. 4, 5. 



Shell depressed, deeply umbilicate, low conic above, rounded be- 

 neath; acutely carinated at periphery. Whorls 4, the last not 

 descending, excavated above and below the keel. Aperture some- 

 what oblique, subtriangular. Lip simple above, expanded below, 

 basal lip reflexed partly over the umbilicus. Ends of lip connected 

 by a faint callous. Sutures not impressed. Light chestnut brown, 

 a darker space above and below the keel and above the sutures. 

 Sculpture of faint wrinkles of growth, covered with very faint, re- 

 volving strife below the keel ; under the glass showing a minutely 

 pitted-granular surface, the granulation more pronounced below the 

 keel. 



Alt. 15, greater diam. 28, lesser diam. 23 mm. 



